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Question: Calculate the sodium ion concentration when 70.0mL of 3.0M sodium carbonate is added to 30.0mL of 1.0M sodium bicarbonate.
Each has a unique set of wavelengths associated with it, how are these different wavelengths generated
the proton nmr spectrum of a compound gives a singlet at ? 2.10 and ? 2.56 in a ratio of 32 respectively. which
A mixture of 1.374g of H2 and 70.31g of Br2 is heated in a 2.00 L vessel at 700 K. These substances react as follows: H2(g) + Br2(g) 2HBr(g) At equilibrium the vessel is found to contain 0.566g of H2.
The polarogram for 20ml of solution that was 3.65*10^-3 in Cd2+ gave a wave for that ion with a diffusion current of 31.3µA . calculate the percentage in change in concentration of the solution
If 84 g of CO reacts to produce 63 g of CH3OH, What is the percent yield of CH3OH?Answer in units of % ?
The equilibrium constant for a certain reaction decreases from 8.51 to 3.3e-2 when the temperature increases from 24°C to 73°C. Estimate the temperature where K = 1.00 for this reaction. T in Kelvin.
Equal quantities of 0.010M solutions of an acid HA and a base B are mixed. The pH of the resulting solution is 9.2. Write the equilibrium equation for the reaction between HA and B.
F2 to give a nickel fluoride. Density of nickel is 8.908 g/cm3. How many moles of nickel foil were used? If you isolated 1.261 g of nickel fluoride, what is its formula
2.0 mL ethanol with 1.0 mL ethylene glycol (HOCH2CH2OH) calculate the theoretical vapor pressure at room temperature for the solution above. using raoults law
Use ΔG=ΔH-TΔS to calculate the standard free energy change, ΔG, at 25oC for the following reaction: CaCO3(s)-->CO2(g) + CaO(s)
Calculate the pH of the 0.39M NH3/ 0.73M NH4CL buffer system . B) what is the pH after the addition of 20.0 mL of 0.075M NaOH
a student found that 0.0025 moles of NaOH was used in titration. how many moles of fatty acids where in the sample
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